/* 
checkIdcard('cardId','birthdayId')检验身份证，和出生日期关联
0通过验证，解决没有身份证的问题
*/ 
function checkIdcard(idCard,birthday)
{ 
	var area={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"} 
	var idcard = document.getElementById('idCard').value;
	if(idCard=="0"){
	  return true;
	}
	var birthday = document.getElementById('birthday').value;
	var Y,JYM; 
	var S,M; 
	var idcard_array = new Array(); 
	idcard_array = idcard.split(""); //用“,”隔开每一个数字
	//地区检验 
	if(area[parseInt(idcard.substr(0,2))]==null){ alert("身份证地区非法!"); return false;}
	//身份号码位数及格式检验 
	switch(idcard.length)
	{ 
	case 15: 
		if ( (parseInt(idcard.substr(6,2))+1900) % 4 == 0 || ((parseInt(idcard.substr(6,2))+1900) % 100 == 0 && (parseInt(idcard.substr(6,2))+1900) % 4 == 0 ))
		{ 
		ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$/;
		} else 
		{ 
		ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$/;
		} 
		if(ereg.test(idcard)){ 
		  return true; 
		}else
		{
		  alert("身份证号码出生日期超出范围或含有非法字符!"); 
		}
		break; 
	case 18: 
	//18位身份号码检测 
	//出生日期的合法性检查 
	//闰年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9])) 
	//平年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8])) 
	if ( parseInt(idcard.substr(6,4)) % 4 == 0 || (parseInt(idcard.substr(6,4)) % 100 == 0 && parseInt(idcard.substr(6,4))%4 == 0 )){ 
	   ereg=/^[1-9][0-9]{5}[1-2][0-9][0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$/
	} else { 
	   ereg=/^[1-9][0-9]{5}[1-2][0-9][0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$/ 
	} 
	if(ereg.test(idcard))
	{   //测试出生日期的合法性 
	    //计算校验位 
		S = (parseInt(idcard_array[0]) + parseInt(idcard_array[10])) * 7 
		+ (parseInt(idcard_array[1]) + parseInt(idcard_array[11])) * 9 
		+ (parseInt(idcard_array[2]) + parseInt(idcard_array[12])) * 10 
		+ (parseInt(idcard_array[3]) + parseInt(idcard_array[13])) * 5 
		+ (parseInt(idcard_array[4]) + parseInt(idcard_array[14])) * 8 
		+ (parseInt(idcard_array[5]) + parseInt(idcard_array[15])) * 4 
		+ (parseInt(idcard_array[6]) + parseInt(idcard_array[16])) * 2 
		+ parseInt(idcard_array[7]) * 1 
		+ parseInt(idcard_array[8]) * 6 
		+ parseInt(idcard_array[9]) * 3 ; 
		var yyyy = idcard.substring(6,10);
		var mm = idcard.substring(10,12);
		var dd = idcard.substring(12,14);
		if(yyyy+"-"+mm+"-"+dd != birthday){alert("出生日期与身份证的出生日期不符合！");return false;}
		Y = S % 11; 
		M = "F"; 
		JYM = "10X98765432"; 
		M = JYM.substr(Y,1);//判断校验位 
		if(M == idcard_array[17]) //检测ID的校验位
		{
		  return true;
		}
		else 
		{ 
		  alert("身份证号码校验错误!"); return false;
		}
	} 
		alert("身份证号码出生日期超出范围或含有非法字符!"); 
		break; 
	default: 
		alert("身份证号码位数不对!"); 
		break; 
  } 
  return false;
}